rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Effect of level of dietary calcium and phosphorus on the site of absorption and utilization of phosphorus in gestating and lactating ruminants
  name:
    name part: Barrett, Robert Clay
    name part: 1968-
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 2002
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    form: remote
    extent: vii, 54 leaves : illustrations ; 28 cm.
  abstract: Two digestion trials were conducted to determine the effect of level of Ca and P on the site and extent of absorption of P in gestating and lactating ruminants. Gestating Nubian dairy nannies (n=8; 41-55 kg) with abomasal cannulas were used in the gestation feeding trial, which consisted of three 20 d dietary treatment periods. Nannies were randomly assigned to the following dietary treatments of Ca and P: 1) Ca 0.4%, P 0.3% (LCLP), 2) Ca 0.8%, P 0.3% (HCLP) and 3) Ca 0.8% and P 0.6% (HCHP) in a replicated 3x3 Latin Square designed experiment. Reassignment of diets during subsequent periods assured that animals would not consume a diet they were previously exposed to. All diets contained 0.25% chromium oxide as a digestive tract marker. Limestone and monocalcium phosphate were utilized to supply the necessary Ca and P. Six d sample periods were used to collect diets beginning on d 13 of each period, refusals beginning on d 14 and abomasal digesta and feces beginning on d 15. Blood was collected 3 h post-feeding on d 20. Nannies fed HCLP had more (P<.05) Ca passing the abomasal cannula than LCLP. Animals fed HCLP excreted more (P<.05) Ca in the feces than those fed LCLP, while increasing dietary P intake had no effect (P>.05) on fecal excretion. Increasing dietary P in the presence of elevated Ca decreased (P<.05) serum Ca. Feeding high Ca in the presence of low dietary P increased (P<.05) serum inorganic P. The lactation feeding trial consisted of two 20 d feeding periods. At parturition, nannies (n=3) from the gestation feeding trial were assigned to one of two dietary treatments of Ca and P: 1) HCLP and 2) HCHP. In addition to samples previously described, milk was collected to determine 24 h milk production and Ca and P concentrations. No differences (P>.05) were detected between dietary treatment groups because the desired P intake was not achieved. These data suggest that dietary Ca levels may be increased with increasing Ca requirements for gestation and lacta…
  note: by Robert Clay Barrett.
  note: "Major subject: Nutrition".
  note: Vita.
  note: Also available online.
  note: Issued also on microfiche from Lange Micrographics.
  note: M.S. Texas A&M University 2002
  note: Includes bibliographical references (leaves 44-51).
  subject:
    topic: major nutrition
  identifier: https://hdl.handle.net/1969.1/ETD-TAMU-2002-THESIS-B3832
  related item:
    location:
      url: https://hdl.handle.net/1969.1/ETD-TAMU-2002-THESIS-B3832
  record info:
    record content source: TXA
    record creation date: 030417
    record change date: 20220103114010.0
    record identifier: in00001735064